The Wisest of Wizards

Ward — {w}{w}{u}{u}{b}{b}{r}{r}{g}{g}.

Any number of players can Assist with costs of any kind.

At the beginning of each upkeep, that player exiles the top ten cards of their library with rainbow counters on them.
You may cast creature or enchantment cards from among cards exiled with rainbow counters. If no creature or enchantment cards are revealed this way, each player gains control of all creatures and enchantments they own and returns all cards they own in exile with rainbow counters to